Broadcast test with current carrier (3,4)

I believe the answer is:

air taxi

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'carrier' is the definition.
I know nothing about this answer so I can't tell whether this works.

'broadcast test with current' is the wordplay.
'broadcast' becomes 'air' (to air on TV).
'test' becomes 'tax'.
'with' means one lot of letters go next to another.
'current' becomes 'I' (symbol for electric current).
'air'+'tax'+'i'='AIR-TAXI'

Can you help me to learn more?

(Other definitions for air taxi that I've seen before include "Vehicle" , "transport" , "One's flown commercially" , "Small aircraft for hire" .)

I've seen this clue in The Irish Times.

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